Velociraptor is a genus of dromaeosaurid theropod dinosaur that lived approximately 75 to 71 million years ago during the later part of the Cretaceous Period. Two species are currently recognized, although others have been assigned in the past.

Carnotaurus

The name means "bull sarcophagus." The Carnotaurus had small head with two thick horns above its eyes, which resembled today's bull. The tail was straight and muscular, which helped him develop high speeds compared to other dinosaurs. This predator had a length of 9 meters, height 4 meters and weighs three tons. He had two small hands were practically useless.

Tyrannosaurus

The name means tyrant lizard. He was one of the largest carnivores that ever lived on land. The size of the teeth was like a banana (15 cm.). He was so big jaws that could fit a small dinosaur whole. Running very fast, but because it was too heavy can not run for a long time. For this reason, hiding behind trees and surprise his victims. Very clever. He was the king of the dinosaurs. Also had a very large head disproportionate to the body and a huge stretched tail to keep balance when running. It was probably scavengers.

Baryonyx

Barionix means heavy claw, ate fish. It sarcophagus belonging to Saurischia. He lived during the early Cretaceous period. He specialized adapters as long low snout (snout) filled with finely serrated teeth and claws like hooks to help him hunt its prey.

Ouranosauros

The name means brave lizard. He had a series of thorns along the back of. These perhaps supported one flap that regulates the temperature of the animal. When estrefe to the sun absorb heat. (Thermal collectors)

Velociraptor

small in size ... reminds us .. rather klosouse hen eggs. Accused egg thief because the first finding was holding hug eggs. But it proved that eggs were his and died trying to protect them.

Amargasaurus

Lizard of La Amarga. He was a herbivorous dinosaur the first fossils found in Argentina in the valley La Amarga. It lived in early Cretaceous period and had a length of 10 m, weighing 5-7 tons and the height reached up to 4 meters. The highlight was the two rows away spines along the neck and back, which it used them as protection from predators. A leather membrane between the spines formed a sail, which managed the dinosaur to regulate the temperature of the body, and to attract the females. Overall it was a dinosaur with a small head, long neck, long tail, voluminous round body and legs like pillars, which were typical five fingers with claws on the first finger.

Iguanodon

Named because it was the same denture with modern lizard iguana. Had a spike for thumb was probably used as a defensive weapon. He stood on both hind legs may be as high as the tallest trees to eat their foliage. Moved in herds ... frequent trips ...

Korythosaurus

Lizard with helmet...The beak looked like duck and had one impressive fan-shaped crest that adorned his head. Smaller in size plumes were young dinosaurs in the females. The plume was used to taking specific sounds or for breeding purposes.

Tenontosaurus

lizard with strong muscles. It was much more husky than their relatives. He used sharp claws in order to defend itself against predators. Skin impressions have been found.

Maiasaurus

The name means good, loving mother. So named because it was one of the few dinosaurs who do not give up eggs. The maiasaurus spawned their eggs in nests in the soil. Gave birth to 40 eggs. Female of maiasaurus they built their nests side by side leaving space so as to fit to lie down beside the nest one maiasaurus. The eggs were different in shape and size.

Parasaurolophus

had a long bony crest on the head. The crest was hollow and were making loud sound (like trumpet) to make the calls of louder. Also the crest may have served and seem scarier or to attract females.

Pachykefalosaurus

Lizard with thick head. He had a thick bony bump on the head of thickness 23 cm. (Like a helmet) and probably protect his head from the blows (absorbing shocks) and tiny brain. The pachikephalosaurus battled for dominance of residence or the female dinosaur.

Triceratops

Face with three horns. Had a wreath on the back that made him look scarier and helped him during the battle. Even perhaps help the breeding season, the male dinosaur has to be more attractive. Maybe change colors. The crown of the male triceratops was larger than the female. From fossils have been discovered that often battled with the T-Rex.I

Protoceratops

Herbivorous dinosaur. The eggs were first discovered in 1920 in Mongolia. Each egg was approximately 20 centimeters. Eggs were nests in soil and contained up to 18 eggs. (We have found fossils of protoceratops and Velociraptor in combat phase

Pachycephalosaurus

The name means lizard with thick Reno (thick nose). Had namely a bony protuberance on its nose apparently served to not hit when koutoulouse defense. This herbivorous dinosaur. Very impressive because of the bony rim. His appearance made him seem scarier and served as a defensive tool.

Centrosaurus

Was well armored with bony plates and spines. And he had a large bony collar (like Pahyrinosaurus and Triceratops and others ...) around his neck to look scarier his opponents. Named Centrosaurus probably because it moved in herds went in a circular array and put their babies in the center to protect them from possible predators attacks. Their beak resembled that of a parrot, was sharpened to cut hard leaves.

Polakanthos

Lizard with many thorns. He was a herbivorous dinosaur the first fossils were found in England. He lived in the early Cretaceous period and had a length of 4 meters and a height of about 1 meter. Long thorns, perhaps located along the neck and sides, while the most crooked spines located along the top of the tail. The combination of these thorns with special armor that was on his back, discouraged the predators to attack. It was low and heavy dinosaur (which made him particularly cumbersome), rather mouth like beak and when he was in danger, stuck in the ground to protect his belly, where the only point at which they could hit the prey and still manage to hurt the dinosaur.

Ankylosaurus

Lizard with brackets, weighs about 4.5 tons. It was one of the last dinosaurs that disappeared (could easily be hidden). Due to its many kilos was cumbersome and had the braces and bone plates all over his body to protect him. The tail looked like a bat and helped him banging with this his enemies.

Tsintaosaurus

It is called so because paleontologists discovered fossil of the region Tsintao China. He weighed about 3 tons and was 10 meters in length. Was phytophagous well observe that has teeth in his mouth. At the top of his head was a long hollow crest with which to gain stronger sounds (whistling) to call and warn the other dinosaurs. (Served as speaker)

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MESOZOIKOS CENTURY (250-65 million years ago)

The Mesozoic is one of the three centuries of geological Fanerozoikou megaaiona , the second largest . The principle is placed at the end of the Permian period 251 million years ago, and ends 65.5 million years ago. Divided into three periods :

The Mesozoic starts with the mass extinction at the end of the Permian period. Main group of organisms that disappear are the trilobites. During Mesozoic century many new species appeared as dinosaurs (occurring at the end of the Triassic period), the first mammals (during early Jurassic period), birds (during late Jurassic period) and spermatophytes (during early Cretaceous). The Mesozoic ends with mass extinction at the end of the Cretaceous period. In this mass extinction mainly hit the kinds of dry disappeared and dinosaurs.

Triassic Period (250-203 million years ago)

The Triassic is the first period of the Mesozoic era. The Friedrich von Alberti, 1834 gave this name to this period, based on the three rock layers found in the regions of Germany and north-western Europe. Originally there was a marine limestone with terrestrial mud, which was covered by sandstone.

During the Triassic was a single super continent (centered near the equator) called Pangaea (in all the Earth). East lies the ocean of Tethys and the rest of the Panthalassa (in the whole sea). This large supercontinent existed until the mid-Triassic. After gradually began to rupture and the creation of two separate dry, the LAVRA from the north and Gondwanaland in the south.

Global climate during this period was mostly hot and dry, with deserts and mountains with bushes. The average temperature of the Earth's surface was estimated by scientists that it was 17 degrees Celsius. There is no evidence for the existence of ice in both the boron and the South Pole. In fact the polar regions were rather wet and mild climate (suitable for growing forests, particularly conifers, and vertebrates, including reptiles). Sea begins the evolution of plant organisms (ie phytoplankton) and dominated by ammonites, mollusks and sea urchins, after surviving the destruction of Prem season. They also make their appearance in the first carnivorous reptiles, ichthyosaurs. On land reptiles that dominated the increase in number of species and size. Are dinosaurs classified in two categories. The ornithischia (in pelvic bones like chicken) and Saurischia (ie pelvic bones as the lizard). From 15 cm at the start, came up to 3-4 m, while began to appear and the first flying reptiles (pterosaurs).ι.

Jurassic Period (203-144 million years ago)

The Jurassic period is the middle period of the Mesozoic era. It was named in honor of Alexander von Humboldt, who did extensive research on the abundant limestone rocks of the mountain system of Jura, located in the Alps between France and Switzerland. In this period the Pangaea separated completely and fully form the LAVRA and Gondwanaland.οι.

The average temperature of the Earth's surface was 16.5 degrees Celsius and the global climate that prevailed was mostly hot and humid, suitable for the development of a rich jungle, where covered and most of the landscape and to form meadows. The flora was dominated in this period are gymnosperms and coniferous trees. The seas were fish, marine reptiles, marine crocodiles and many turtles. On shore we find vegetarian dinosaurs with very long neck and quite tall sarcophagi dinosaurs..

Cretaceous Period (144-65 million years ago)

The Cretaceous period is the most recent period of the Mesozoic era during which formed layers of "Cretaceous conformation" of the earth's crust. It owes its name to the "chalk" (ie chalk), which is a soft rock, limestone and almost white deposited extensive northeastern Europe areas (eg the white cliffs of Dover, England) and was appointed by the geologist Jean d 'Omalius d'Halloy in 1822.

The average temperature of the Earth's surface was 18 degrees Celsius and the global climate was mostly hot, resulting in the creation of many shallow lagoons due to the large amount of water evaporation. Seas appear corals, sponges, echinoderms, cephalopods, the klasmatovranchia, etc. There is evidence of frequent rainfall and snowfall but special they were not near the polar regions. On shore the first warm-mammals, pregnant their descendants within the body and feed the blood through the placenta. To maintain their body temperature stable, they need more food. They are small rodents, mouse size and live in forests (eg Alfadontas, Krousafontia, Salamvdalistis).

The seasons begin to rotate favoring deciduous trees. Some plants produce nectar and rudimentary flowers.
At sea, on land and in the air is dominated by reptiles.
Birds evolved from reptiles into two branches. The first has representatives with well-developed wings and the second has representatives with well developed legs for swimming.
Folds in the Earth's crust begin creating the Alps, Andes and Rocky Mountains in the US and other mountain ranges. The continent Gondwanaland at the beginning of this period was almost intact, but later separated, creating N. America, Antarctica and Australia.
Towards the end of this period the dinosaurs disappear along with 75% of the species were ever to Earth. In this disappearance managed to survive the turtles, snakes, lizards, crocodiles and some insects (termites, ants, butterflies, moths, aphids, grasshoppers, etc.).